Which of the following statements about cadherins and integrins are true? (Select all correct choices.)
A. They are found on the surfaces of most
animal cells.
B. They are transmembrane proteins that
attach to cytoskeletal elements inside the cell.
C. They are highly diverse, and highly
specific for what their extracellular domain will
attach to.
D. They are not found in embryonic cells.
A,B,C
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A(n) ________ organism is generally harmless in its normal host but can become pathogenic in a compromised host.
Fill in the blank(s) with the appropriate word(s).
Atomic Number
What will be an ideal response?
Humans infected with Brucella species develop ________ characterized by fever, chills, sweating, muscle aches, and headache.
A. rabbit fever B. undulant fever C. trench fever D. Q fever E. cat scratch fever
A mountain climber was rescued after spending 36 hours exposed to the elements on a slope of Mount Everest. Miraculously, the only permanent damage was to his toes, all of which had to be removed. What was the most likely cause of the damage to his toes?
A. Blood pooling in the veins in his feet B. Metabolic (nitrogenous) wastes pooling in his feet C. Vasoconstriction of the arteries to his legs and feet D. The inability of his white blood cells to destroy infectious bacteria E. Increased levels of carbon dioxide in his feet